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| Study and Implementation of the Auto-calibration System of Vector Hydrophone |
| LIU Jin-chang1,FEI Teng2,LIU Ming-bo1,Liao Shu-chang1 |
1. Science and Technology on Underwater Acoustic Antagonizing Laboratory, Zhanjiang, Guangdong 524022, China
2.National Defence Underwater Accoustics Calibration Laboratory, Hangzhou, Zhejiang 311400, China |
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Abstract Auto-calibration system of vector hydrophone has very important value in acoustic measurement. The system can accomplish low frequency auto-calibration of vector hydrophone. It can measure the signal amplitude of the standard hydrophone by dynamic signal acquisition. The sound field distribution is tested in the standing wave field. The standard uncertainty and expanded uncertainty of the system are analyzed and discussed. The comparison testing is given for pressure sensitivity. The expanded uncertainty of the system is 1.6dB.
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［1］陈丽洁,张鹏,徐兴烨,等. 矢量水听器综述 ［J］. 传感器与微系统,2006,25(6):7.
［2］费腾. 矢量水听器校准装置［J］.声学技术,2005,增刊:289.
［3］GJB 3756—99,测量不确定度的表示及评定［S］.1999. |
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2011, Vol. 32 
